forked from boostorg/range
59 lines
1.6 KiB
Plaintext
59 lines
1.6 KiB
Plaintext
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[section:remove_if Range Algorithm - remove_if]
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[heading Prototype]
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``
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template<
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class ForwardRange,
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class UnaryPredicate
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>
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typename range_iterator<ForwardRange>::type
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remove(ForwardRange& rng, UnaryPredicate pred);
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template<
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class ForwardRange,
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class UnaryPredicate
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>
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typename range_iterator<const ForwardRange>::type
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remove(const ForwardRange& rng, UnaryPredicate pred);
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template<
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range_return_value re,
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class ForwardRange,
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class UnaryPredicate
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>
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typename range_return<ForwardRange,re>::type
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remove(ForwardRange& rng, UnaryPredicate pred);
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template<
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range_return_value re,
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class ForwardRange,
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class UnaryPredicate
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>
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typename range_return<const ForwardRange,re>::type
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remove(const ForwardRange& rng, UnaryPredicate pred);
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``
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[heading Description]
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`remove_if` removes from `rng` all of the elements `x` for which `pred(x)` is `true`. The versions of `remove_if` that return an iterator, return an iterator `new_last` such that the range `[begin(rng), new_last)` contains no elements where `pred(x)` is `true`. The iterators in the range `[new_last, end(rng))` are dereferenceable, but the elements are unspecified.
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[heading Definition]
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Defined in the header file `boost/range/algorithm/remove_if.hpp`
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[heading Requirements]
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* `ForwardRange` is a model of the __forward_range__ Concept.
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* `ForwardRange` is mutable.
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* `UnaryPredicate` is a model of the `PredicateConcept`.
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* `ForwardRange`'s value type is convertible to `UnaryPredicate`'s argument type.
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[heading Complexity]
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Linear. `remove_if` performs exactly `distance(rng)` applications of `pred`.
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[endsect]
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